Measurement Computing miniLAB-1008 - Manual (Page 30)

miniLAB 1008 User's Guide Specifications
Counters
Counter type Event counter
Number of channels 1
Input source CTR screw terminal
Input type TTL, rising edge triggered
Resolution 32 bits
Schmidt trigger hysteresis 20 mV to 100 mV
Input leakage current ±1 µA
Maximum input frequency 1 MHz
High pulse width 500 ns min
Low pulse width 500 ns min
Input low voltage 0V min, 1.0 V max
Input high voltage 4.0 V min, 15.0 V max
Non-volatile memory
Memory size 8192 bytes
Address Range
Access Description
0x0000 – 0x17FF Read/Write A/D Data (4k samples)
0x1800 – 0x1EFF Read/Write User data area
0x1F00 – 0x1FEF Read/Write Calibration Data
Memory configuration
0x1FF0 – 0x1FFF Read/Write System Data
Power
Parameter Conditions Specification
Supply Current (Note 5)
20 mA
Connected to Self-Powered Hub 4.5 V min, 5.25 V max +5V USB power available
(Note 6)
Connected to Bus-Powered Hub 4.1 V min, 5.25 V max
Connected to Self-Powered Hub 450 mA min, 500 mA max Output Current (Note 7)
Connected to Bus-Powered Hub 50 mA min, 100 mA max
Note 5:
Note 6:
Note 7:
This is the total current requirement for the miniLAB-1008 which includes up to 5mA for the status
LED.
Self-powered refers to USB hubs and hosts with a power supply. Bus-powered refers to USB hubs and
hosts without their own power supply.
This refers to the total amount of current that can be sourced from the USB +5V, analog outputs and
digital outputs.
General
Parameter Conditions Specification
25 °C ±30 ppm max
0 to 70 °C ±50 ppm max
USB controller clock error
-40 to 85 °C ±100 ppm max
Device type USB 1.1 low-speed
Device compatibility USB 1.1, USB 2.0
Environmental
Operating temperature range -40 to 85 °C
Storage temperature range -40 to 85 °C
Humidity 0 to 90% non-condensing
4-4